Certum is Poland's largest qualified electronic signature provider, including the mobile SimplySign, and the leading developer of a comprehensive range of security and trust services. We promote and implement innovative paperless solutions, enabling almost complete elimination of paperless documents in favor of electronic ones, signed with a biometric or a qualified electronic signature.

We specialize in certification services confirming the identity of people on the Internet. We provide solutions that ensure the reliability and security of documents, electronic data and devices with network access.